Grain-cleaner



(No Model.)

O. TUPPER.

GRAIN CLEANER.

No. 338,236. Patented Mar; 16, 1886.

WITNESSES: a 1% UNITED STATES PATENT OFFICE.

CHARLES TUPPER, OF RIDGELAND, ILLINOIS.

GRAIN-CLEANER.

SPECIFICATION forming part of Letters Patent No. 338,236, dated March16, 1886.

Application filed September 25, 1885. Serial No. 178,199. (No model.)

To all whom it may concern.-

Be it known that 1, CHARLES TUPPER, a citizen of the United States, anda resident of Ridgeland, in the county of Cook and State of Illinois,have invented a new and useful Improvement in Grain-Cleaners, of whichthe following is a specification, reference being had to theaccompanying drawings, illustrating the invention, in which Figure I isa side elevation of my improved grain-cleaner with the side frame-boardremoved, better to show the internal construction. The external gearingis in its relative position, except where broken away. Fig. II is a viewof the front of Fig. I, with some portions broken away. Fig. III is aperspective representation of the grain-stop removed from the cleaner.

This invention relates to mills to be set in barns, stables, and otherplaces adjacent to where grain is to be fed, for the purpose of freeingsuch grain from dust and other impurities; and it consists, incombination with the body, hopper, inclined back board, and blast-fan,of a dust-discharge spout which is placed on the top of the body andabove the lower end of the hopper, and an adjustable grain-stop placedthrough the back board, at or near its junction with the spout, toprevent grain from being driven out by the blast. This constructionplaces the dust-escape adjoining the liopper, and the stop returns anygrain which is blown against it. Between the fan and the lower portionof the inclined back board is a deflecting-plate, which prevents anydownward blast from the fan. This plate is an elongation of the envelopeor case of the fan. The hopper is placed in such position at the top ofthe fan-case as'to bring the falling grain well into the wind before itcomes in contact with the back board, so that the dust may all beremoved, as hereinafter fully set forth. I

M represents the back board, which serves as a part of the inclosure tothe wind-chamber, and as a conductor for delivering the grain to thereceptacle N, and also as a deflector to direct the wind into thedustspout J, and its lower end serves as a foot to support thebottomofthe front portion of the mill.

On the top of the body or" the mill is placed a dust-spout, J, which inpractice should project into some outer apartment or through the wall ofa building to the open air, as shown by the line Q, which represents theline of the building-wall.

The hopper K is set through the spout, as the simplest construction toconnect the parts in a substantial cheap manner.

The two sides of the mill are formed of boards A, of the form shown,they being secured to the back M by nails in the ordinary manner, andthe front part and bottom of the wind-chamber are formed of thin sheetmetal, B O, nailed to the side pieces, A, and the lower end of the metalis turned up at D, to form a deflector for directing the blast upwardand preventing it from being driven down on the discharging grain.

At the junction of the back board, M, and

spout J is placed a stop, L, which may be adjusted to or from thehopper, as the case may require, to prevent heavy or light grain frombeing driven up by the blast into the dustspout.

S is an ordinary slide to regulate the feed of grain to thewind-chamber.

E represents an ordinary fan.

G is a pulley on the fanshaft, and is driven by a band-wheel, H.

To tighten the band F, the hub d of the wheel-hanger a hasextension-wings V, which are slotted to receive screws to hold thegearing to the side of the mill, the slots permitting the hub to bemoved from the pulley G, and thus tighten the band. Gear-wheels may beused instead of the band-pulleys.

If desired, the hopper K may connect with the bin of grain above, sothat no grain can be used unless it be cleaned.

The back portion of the mill is supported by two legs, P, which comedown to alevel with the lower end, T, of the back board. 7

The mill is operated in the usual manner by turning the wheel H by thecrank-pin W; but it may be operated by other power.

I claim and desire to secure by Letters Patenta In combination with thebody A B O, hopper K, inclined back board, M, and blastfan E, adustdischarge spout, J, which is placed on the top of the body and abovethe lower end of the hopper, and an adjustable grain-stop, L, putthrough the back board at or near its junction with the dust-dischargespout, as and for the purpose specified.

Vitnesses: CHARLES TUPPEB.

G. L. GHAPIN, J AMES ALLEN.

